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Finding the Fourth Proportional to 20,607.08, 30,904.86 and 8,919.08

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Solution

The fourth proportional to 20,607.08, 30,904.86 and 8,919.08 is: 13,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.08 : 30,904.86 = 8,919.08 : x
  2. Step 2: Convert to fraction form
    20,607.08/30,904.86 = 8,919.08/x
  3. Step 3: Cross multiply
    20,607.08x = 30,904.86 × 8,919.08
  4. Step 4: Simplify right side
    20,607.08x = 275,642,918.73
  5. Step 5: Solve for x
    x = 275,642,918.73/20,607.08
  6. Step 6: Final answer
    x = 13,376.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.